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Finding the Fourth Proportional to 682,811.56, 942,374.82 and 381,025

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Solution

The fourth proportional to 682,811.56, 942,374.82 and 381,025 is: 525,867.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,811.56 : 942,374.82 = 381,025 : x
  2. Step 2: Convert to fraction form
    682,811.56/942,374.82 = 381,025/x
  3. Step 3: Cross multiply
    682,811.56x = 942,374.82 × 381,025
  4. Step 4: Simplify right side
    682,811.56x = 359,068,365,790.50
  5. Step 5: Solve for x
    x = 359,068,365,790.50/682,811.56
  6. Step 6: Final answer
    x = 525,867.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.